查询词典 distributed data base

Then, it studies the supply chain management system as a complex system to confirm the state existing during operating of the system. After that, it conducts a probability analysis on the state which the system located by applying supplement variable method, and establishes the model of distributed parameter system in a form of partial differential equations. Combining C0 ? semigroup theory in the functional analysis, it conducts a dynamic analysis on the established mathematical model. Using this method, it obtains the mathematical expression of the dynamic solution and the steady state solution, and proves the uniqueness, non-negativity and the asymptotic stability of the system solution. This dissertation applies the Matlab tool and uses two-step, three-step Simpson integral equation to imitate the condition of system solution. Then, it adds possible mode of failure and the optimization adjustment state to the system, based on which it has established the distributed parameter system model which is described by partial differential system of equations. Combining the functional analysis C0 ? semigroup theory, it studies the established mathematical model, and obtains the mathematical expression of the dynamic solution system and the steady state solution. It has proven the existing of uniqueness of the system solution, the asymptotic stability of system solution and the system solution. In addition, it has lying the theory rationale for further analysis and the research on the optimization of system.

本文首先简要综述了供应链理论、可靠性研究、鲁棒性研究以及供应链鲁棒性研究的现状；然后，将供应链系统作为一个复杂系统来分析，确定了系统运行过程中所经历的状态，通过引入补充变量的方法，建立了用偏微分方程组描述的分布参数系统模型，用泛函分析中的C_0 -半群理论得到了系统动态解和稳态解的数学表达式，证明了系统解存在的唯一性、非负性和指数阶渐近稳定性；并借助Matlab工具，利用二阶、三阶辛普森积分方程模拟系统解的性态，并给出系统动态解的仿真图；本文又对上述系统增加了系统可能失效状态和优化调整状态，并在此基础上建立了用偏微分方程组描述的分布参数系统模型，同样用泛函分析中的C_0 -半群理论对所建立的数学模型进行了研究，得到系统动态解和稳态解的数学表达式，证明了系统动态解存在的唯一性、非负性及渐近稳定性，为进一步分析和研究供应链优化奠定了理论基础。

The calculation results show that the normal component of magnetic intensity is symmetrically distributed around the point of the acting force, where the normal component reach the maximum value; while the tangential component is antisymmetrically distributed around the point of the acting force, where the tangential component inverses its direction sharply.

结果表明，空气中扰动磁场的法向强度和切向强度分布特征明显不同，法向强度关于力作用点对称分布，并且在力作用点处达到最大，而切向强度关于力作用点反对称分布，并且在力作用点处有突变；地磁环境下，磁场对位移的影响可以忽略不计；扰动场强与外力成正比。

The emergence of distributed multimedia applications such as teleconferencing, remote education and distributed interactive simulation etc.

随着远程会议、远程教育和交互式仿真等分布式多媒体应用的兴起，组播技术受到网络研究人员的重视。

Among them,73 genera and 36 families,occupies 80.23% of the total number of the genera and 78.26% of that of the families, were tropically and subtropically distributed genera and families, the other 18 genera and 4 families,merely occupied 19.77% of the total number of the genera and 8.70% of that of the families,were temperately distributed genera and families,which suggested that the variation of the altitude might affect the plant composition of communities in some degree.

热带性成分科、属与温带性成分科、属各有36科、73属和4科、18属，分别占样地种子植物科、属总数的78.26%、80.23%和8.70%、19.77%，表明热带性区系成分在群落中的优势地位，同时一定数量的温带成分的入侵，反映出海拔高度变化在一定程度上对植物区系组成的影响，表明鼎湖山山地常绿阔叶林具有向中亚热带常绿阔叶林过渡的特点。

Besides, This paper also discusses the implementation mechanism of distributed transaction processing and the distributed recovery of the model.

同时，本文还重点讨论了模型中的分布式事务处理和分布式恢复的实现机制。

The time it takes to be served is triangularly distributed with minimum, most likely, and maximum times of 14, 19 and 24 minute, respectively. The time it takes to eat is normally distributed with a mean of 24 minutes and a standard deviation of 5 minutes.

聚会的时间是服从三角分配，其最小时间、最可能时间及最大时间分别为 14 、 19 、 24 分钟，若聚会的时间是使用随机分配平均值为 24 分钟，标准差 5 分钟。

Formulas for calculating internalforces and displacements under the action of lateral forccs, concentrated at thetop, uniformly distributed along its rise or triangularly distributed, are then.given.

与此同时，着重研究了基于单连杆计算图式的简捷分析法，给出了经修正后的内力位移简捷计算公式以及它们的适用范围。

Mainstream distributed application systems are middleware based systems presently, but common middleware lack of real-time capacity.Real-time middleware offers a common soft bus framework eliminated distributed real-time systems unhandy architecture.

实时中间件提供了真正的通用软件总线结构，它可以去掉当前分布式实时系统的不灵活结构，因此中间件与实时系统的结合自然成了今后分布式实时系统的一个重要发展方向。

The ambiguity of DOA estimation due to ignorance of the function form of angular signal distribution is analyzed and the DOA estimation without ambiguity is given. 4. A method of DOA estimation of distributed sources is proposed by using the knowledge of the unimodal property of angular signal distribution and independence between different distributed sources.

利用角信号分布函数的共轭对称性，提出了基于噪声子空间的极小最小特征值一维搜索分布式目标DOA估计方法，和基于信号子空间的极大最大特征值一维搜索分布式目标DOA估计方法。

The characteristic of the DIS is "distributed" and "interactive", and make the joint of simulation code which is in different place to constitute a uniform and unisonous simulation environment is the essence of the Distributed Combat Simulation.

基于DIS的分布式作战模拟系统的特征在于"分布"和"交互"，本质是把分布在不同地理位置上的仿真结点连接起来，构成统一的、协调的综合仿真环境，允许人的参与和行为表现。

We got alerted a couple of times while we were down south that HETs were on the way to bring us back up north because things were going to go hot again, but it was just rumors.

南下的途中我们不只一次得到警告说重型装备运输车将拉着我们重新北上，因为局势正在变得重新紧张起来，但这只是谣传。

It's the one where they find the ghost in the salt mine.

这一集是演他们在盐矿找到鬼